Unmanned aerial drone



FIG. 1 is a perspective view of an unmanned aerial drone;

FIG. 2 is a top view thereof;

FIG. 3 is a bottom view thereof; and,

FIG. 4 is a left side view thereof, the front view, rear view, and right side view being identical to the left side view.

The broken line showing of portions of the unmanned aerial drone forms no part of the claimed design. 

CLAIM The ornamental design for an unmanned aerial drone, as shown and described. 